// source : http://japan.internet.com/developer/20051004/30.html

startHighlight = function()
{				
	if (document.all && document.getElementById)
	{
		navRoot = document.getElementById('bkmenu1');
		for (i = 0; i < navRoot.childNodes.length; i++)

		{
			node = navRoot.childNodes[i];
			if (node.nodeName == "TD" && node.className != 'arw')
			{
				node.onmouseover=function(){ this.className = "over"; }
				node.onmouseout=function() { this.className = this.className.replace("over", ""); }
			}
		}
		navRoot = document.getElementById('bkmenu2');
		for (i = 0; i < navRoot.childNodes.length; i++)
		{
			node = navRoot.childNodes[i];
			if (node.nodeName == "TD" && node.className != 'arw')
			{
				node.onmouseover=function(){ this.className = "over"; }
				node.onmouseout=function() { this.className = this.className.replace("over", ""); }
			}
		}
	}
}